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III, INERT THE TANK <br /> A, UNDER THE DIRECTION OF THE LOCAL FIRE MARSHALL INERT THE TANK, AT A <br /> MINIMUM THIS IS TO INCLUDE THE FOLLOWING; <br /> 1, APPLY20 LBS OF DRY ICE FOR EACH 1 00 GALLON SIZE OR FRACTION <br /> THERE OF, TO FACILITATE THIS, BREAK ICE INTO SMALL PIECES AND <br /> DROP DOWN FILL TUBE <br /> 2, LEAVE FILL PIPE UNCAPPED AND VENT LINE CONNECTED TO ALLOW VOCs <br /> TO ESCAPE <br /> 3, INERTING PROCESS SHOULD NOT BE PERFORMED MORE THAN 2 HOURS <br /> PRIOR TO TANK REMOVAL <br /> B. TO ENSURE UST INERTING IS SUFFICIENT, AN LEL (LOWER EXPLOSIVE LIMIT) <br /> METER WILL BE USED TO DETERMINE VAPOR CONCENTRATIO <br /> 1, RE-INERT AS REQUIRED <br /> 2, UNDER NO CIRCUMSTANCES SHALL THE TANK BE PULLED IF THE <br /> CONCENTRATION IS WITHIN 20% OF THE LEL <br />